Display screen or portion thereof with icon



FIG. 1 is a front view of an display screen or portion thereof with icon, showing our new design; and,

FIG. 2 is a front view of the display screen or portion thereof with icon of FIG. 1, in which a mobile terminal in broken line is provided to illustrate an example environment.

The broken line is for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for an display screen or portion thereof with icon, as shown and described. 